Full-section intermittent wriggling propulsion heading machine

Abstract

The utility model discloses a full-section intermittent wriggling propulsion heading machine which is further improved on the basis of an intermittent wriggling propulsion type well drill proposed in Chinese patent literature with the announcement number of CN2821127Y, and at least one boosting mechanism is additionally arranged, so that the horizontal heading operation is safer, and the working efficiency is improved. The utility model relates to a drill rod propelling device, which is free of the situation that a drill rod propelling unit is easy to damage due to the fact that only one propelling structure (a boosting mechanism or a main propelling mechanism) works, and comprises a top suspension structure, at least two stages of boosting mechanisms, the main propelling mechanism and a drill bit base disc (33), and the two stages of boosting mechanisms are coaxially connected through a second hydraulic unit (8). Wherein the primary boosting mechanism is also coaxially connected with the main pushing mechanism through a second hydraulic unit (8).

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel excavation equipment, in particular to a full-section intermittent creeping propulsion tunneling machine. Background Art

[0002] One of the prior art: A Chinese patent document with the announcement number CN2357120Y proposes a peristaltic extension drilling machine, which adopts a structure with a top suspension structure and can be suspended on the derrick through a corresponding suspension device, wherein a positioning mechanism for mutual positioning with the wellbore peripheral wall structure is provided, and a propulsion mechanism capable of intermittent axial telescopic movement and a drill rod propulsion unit driven by the propulsion mechanism to advance and retreat are provided in the drilling machine body, and the propulsion mechanism capable of intermittent axial telescopic movement synchronously drives the drill rod propulsion unit to perform intermittent alternating telescopic movement to complete the drilling operation, thereby getting rid of the traditional bulky and complex drilling equipment and the long drill rod, making the drilling equipment structure simple and compact, reducing the cost, and not being limited by the drilling depth. In practice, it is found that the document proposes that the pressurized telescopic airbag structure is used as the intermittent telescopic mechanism, which is sometimes still unsatisfactory. For example, when the drilling hole diameter is large, the increase of the propulsion pressure during drilling is easily limited, and the airbag structure is easily damaged and fails, affecting the service life. On the other hand, during drilling operations, it is necessary to position the drilling rig and the borehole wall or the borehole casing relative to each other, which is also achieved through the expansion force of the high-pressure airbag structure. In some cases, especially when encountering complex geological structures such as pebbles, sand layers, cavities, water layers, etc., the positioning and locking effect between the high-pressure airbag positioning structure and the borehole wall is often not ideal.

[0003] Prior art 2: The Chinese patent document with announcement number CN2821127Y proposes an intermittent peristaltic propulsion drilling machine, combined with Figure 4 As shown, it includes a top suspension structure 1, a booster mechanism (constituting a supporting connection structure 2, a hydraulic device A3, a top support fitting body A4, a first hydraulic unit 6, a drilling rig rear unit body 17, an axially extending inner cavity 19, a positioning guide structure 21, etc.), a second hydraulic unit 8, a main push mechanism (constituting a drilling rig front unit body 18, a drill rod propulsion unit 10, a supporting structure 12, a hydraulic device B13, a top support fitting body B14, etc.) and a drill bit base plate 33.

[0004] Combination Figure 4 As shown, the specific structure of the technical solution is: a top suspension structure 1 can be suspended on the derrick ( Figure 3In the drilling rig body structure (not shown in the figure), a positioning mechanism is provided for being relatively fixed with the wellbore peripheral wall structure 5 such as the wellbore casing; a propulsion mechanism capable of intermittent axial telescopic movement and a drill rod propulsion unit 10 driven by the propulsion mechanism for advancing and retreating are provided in the drilling rig body, which includes a driving motor 11, a drill rod 15 and a drill bit 16 connected sequentially from the back to the front. The drilling rig body includes two parts, a drilling rig front unit 18 and a drilling rig rear unit 17, which are connected sequentially.

[0005] A supporting connection structure 2 is provided in the rear unit body 17 of the drilling rig along the axial center and has an axially extending inner cavity 19, and the front of the axially extending inner cavity 19 is a through opening 20. A first hydraulic unit 6 is fixedly connected to the axially extending inner cavity 19 of the supporting connection structure 2, and the telescopic piston 7 of the first hydraulic unit is matched with the positioning guide structure 21 of the supporting connection structure 2 on the side of the through opening 20 to perform telescopic movement.

[0006] A support structure 12 is arranged along the same axial direction in the front unit body 18 of the drilling rig, and it also has an axially extending content space. The drill rod propulsion unit 10 is matched in the support structure 12 through a corresponding guide structure in a manner that it can perform axial reciprocating motion.

[0007] A second hydraulic unit 8 is also provided, which is firmly connected to the rear end of the front unit body 18 of the drilling rig and the front end of the telescopic piston 7 of the first hydraulic unit, and the front end of the telescopic piston 9 of the second hydraulic unit is connected to the above-mentioned drill rod propulsion unit 10, so that the propulsion force required for drilling can be provided to the drill rod propulsion unit 10 through the outward push of the telescopic piston 9 of the second hydraulic unit.

[0008] The above-mentioned positioning mechanisms arranged outside the front unit body 18 and the rear unit body 17 of the drilling rig for mutual positioning with the wellbore wall structure 5 are respectively three groups of hydraulic presses and other positioning hydraulic devices (hydraulic device A3 at the rear unit body 17 of the drilling rig, hydraulic device B13 at the front unit body 18 of the drilling rig) arranged in the radial plane direction at circumferentially symmetrical positions. Each group of positioning hydraulic devices has two hydraulic presses arranged along the same axial direction, and a supporting fitting body connected as an integral structure is respectively arranged between the piston ends of the two hydraulic presses in each group (support fitting body A4 at the rear unit body 17 of the drilling rig, support fitting body B14 at the front unit body 18 of the drilling rig) to expand the supporting contact range between the hydraulic pushing piston and the wellbore wall structure 5 such as the wellbore casing during positioning, thereby improving the stability and reliability of positioning. Although this technical solution can solve the defects of a peristaltic extension drilling rig proposed in the Chinese patent document with announcement number CN2357120Y, it still cannot meet the requirement of being able to move forward and backward, especially in terrain with support on only one side. When one group of hydraulic units shrinks, only one group of hydraulic units remains to play a supporting role, and the other section is completely unable to provide support. As a result, when the center of gravity is shifted, there is a head-lift phenomenon, causing the unsupported section to be pressed down and touch the ground, resulting in many parts of this section being damaged. Utility Model Content

[0009] The purpose of the utility model is to design a full-section intermittent peristaltic propulsion tunnel boring machine, which is further improved on the basis of the intermittent peristaltic propulsion drilling machine proposed in the Chinese patent document with announcement number CN2821127Y, and at least one boosting mechanism is additionally added to achieve that in a terrain with at least one side support, when the supporting components (external hydraulic unit, top support fitting body) of a propulsion structure (boosting mechanism or main propulsion mechanism) shrink, there are still two propulsion structures that are still in a supporting state, so that the center of gravity will not be shifted, resulting in the occurrence of parts that are not in a supporting state being crushed.

[0010] The utility model is realized through the following technical scheme: a full-section intermittent peristaltic propulsion tunnel boring machine, including a top suspension structure, a boosting mechanism, a main propulsion mechanism and a drill base plate, wherein the boosting mechanism is provided with at least two stages, and the two-stage boosting mechanisms are coaxially connected through a second hydraulic unit, wherein the first-stage boosting mechanism is also coaxially connected to the main propulsion mechanism through the second hydraulic unit.

[0011] In order to better realize the full-section intermittent peristaltic propulsion tunnel boring machine described in the utility model, the following setting structure is particularly adopted: between the stages of the boosting mechanism, the positioning and guiding structure at the through opening of the rear-stage boosting mechanism is connected to the rear end of the second hydraulic unit, and the telescopic piston of the second hydraulic unit is connected to the rear end of the drilling rig rear unit body of the previous-stage boosting mechanism.

[0012] In order to better realize the full-section intermittent peristaltic propulsion tunnel boring machine described in the utility model, the following setting structure is particularly adopted: it also includes a fixed slag bucket installed on the drill bit base plate, a conveyor belt device for outputting the sand in the fixed slag bucket, a sand suction pump for sucking sand and a high-pressure airflow sand blowing device for sending the sucked sand into the fixed slag bucket, and the conveyor belt device and the high-pressure airflow sand blowing device are both installed along the axial direction of the tunnel boring machine.

[0013] In order to better realize the full-section intermittent peristaltic propulsion tunnel boring machine described in the utility model, the following setting structure is particularly adopted: on the tunnel boring machine, along the central axis of the tunnel boring machine, the conveyor belt device and the high-pressure airflow sand blowing device are arranged at an angle greater than 30 degrees.

[0014] In order to better realize the full-section intermittent peristaltic propulsion tunnel boring machine described in the utility model, the following setting structure is particularly adopted: a laser guide device consisting of a light source, a light ring and a light target is also arranged on the tunnel boring machine parallel to the central axis of the tunnel boring machine, and a light target and a light ring are arranged at the main propulsion mechanism, a light ring is arranged at each booster mechanism, and a light source is arranged at the rear end of the top suspension structure.

[0015] In order to better realize the full-section intermittent peristaltic propulsion tunnel boring machine described in the utility model, the following setting structure is particularly adopted: it also includes a camera arranged on the left and right sides of the middle part of the tunnel boring machine.

[0016] In order to better realize the full-section intermittent peristaltic propulsion tunneling machine described in the utility model, the following setting structure is particularly adopted: it also includes a control room, a hydraulic station arranged on the side of the control room and a gas detector arranged in the hydraulic station. The control room, the hydraulic station and the gas detector are connected as a whole to the top suspension structure.

[0017] In order to better realize the full-section intermittent peristaltic propulsion tunneling machine described in the utility model, the following setting structure is particularly adopted: a drill bit water supply device is also arranged on the front unit body of the drilling rig of the main pushing mechanism.

[0018] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0019] The utility model is a further improvement on the intermittent peristaltic propulsion drilling rig proposed in the Chinese patent document with announcement number CN2821127Y, by adding at least one boosting mechanism, so that in a terrain with at least one side supported, when the supporting components (external hydraulic unit, top support fitting body) of a propulsion structure (boosting mechanism or main propulsion mechanism) shrink, there are still two propulsion structures in a supporting state, so that the center of gravity will not be shifted, resulting in the occurrence of parts that are not in a supported state being crushed.

[0020] Since the utility model has at least one additional group of boosting mechanisms, the whole machine can be pushed forward to dig the tunnel.

[0021] The utility model utilizes creeping motion to realize walking on the ground or in a lane under the cooperation of at least two groups of hydraulic devices and a supporting matching body.

[0022] The utility model has a retreat function, which is convenient for replacing the drill bit and repairing the boring machine, while the existing intermittent creeping propulsion drilling machine does not have this function.

[0023] The utility model has three groups of walking legs (top support matching bodies), which can realize laser guidance and adjust the excavation direction in real time. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the axial section structure of the full-section intermittent creeping propulsion tunnel boring machine of the utility model.

[0025] Figure 2 for Figure 1 Schematic diagram of the AA section structure.

[0026] Figure 3 The utility model is a simplified layout diagram of the control room, fixed slag removal bucket and hydraulic station.

[0027] Figure 4 A Chinese patent document with the publication number CN2821127Y provides a schematic diagram of the axial cross-section structure of an intermittent peristaltic propulsion drilling machine.

[0028] Among them, 1-top suspension structure, 2-support connection structure, 3-hydraulic device A, 4-top support matching body A, 5-wellbore peripheral wall structure, 6-first hydraulic unit, 7-first hydraulic unit telescopic piston, 8-second hydraulic unit, 9-second hydraulic unit telescopic piston, 10-drill pipe propulsion unit, 11-drive motor, 12-support structure, 13-hydraulic device B, 14-top support matching body B, 15-drill pipe, 16-drill bit, 17-drilling rig rear unit , 18-drilling rig front unit, 19-axially extending inner cavity, 20-through opening, 21-positioning guide structure, 22-light source, 23-halo A, 24-halo B, 25-halo C, 26-light target, 27-control room, 28-fixed slag bucket, 29-hydraulic station, 30-gas detector, 31-camera, 32-conveyor belt device, 33-drill bit base, 34-drill bit water supply device, 35-sand pump, 36-high-pressure air flow sand blowing device. DETAILED DESCRIPTION

[0029] The present invention is further described in detail below in conjunction with the embodiments, but the implementation manner of the present invention is not limited thereto.

[0030] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is claimed, but merely represents selected embodiments of the utility model.

[0031] In the description of the present invention, it is necessary to understand that the orientation or positional relationship indicated by terms, etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0032] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0033] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "set", "lay out", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, or a detachable connection, or integrated, and the specific means are not limited to various conventional mechanical connection methods such as screw connection, interference fit, riveting, and thread-assisted connection. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0035] For ease of understanding, Figure 4 The intermittent peristaltic propulsion drilling machine is clearly explained. Since the utility model is essentially an improvement on the technical structure, the specific connection mechanism, working relationship, functional role, etc. of the same parts as this scheme will not be repeated in subsequent embodiments.

[0036] The intermittent peristaltic propulsion drilling rig has a locating mechanism for mutual positioning with the wellbore peripheral wall structure 5 in a rig body structure with a top suspension structure 1 and can be suspended on the derrick through a suspension device, and a propulsion mechanism capable of intermittent axial telescopic movement and a drill rod propulsion unit 10 driven forward and backward by the rig body are arranged in the rig body. The rig body structure includes a rig front unit 18 and a rig rear unit 17 connected in sequence. The rig rear unit 17 is connected to the first hydraulic unit 6 through a supporting connection structure 2. There is also a second hydraulic unit 8, which is simultaneously connected to the rear end of the rig front unit 18 and the front end of the telescopic piston 7 of the first hydraulic unit, and the front end of the telescopic piston 9 of the second hydraulic unit is connected to the drill rod propulsion unit 10. Positioning mechanisms for mutual positioning with the wellbore peripheral wall structure 5 are arranged outside the rig front unit 18 and the rig rear unit 17.

[0037] In the above structure, since the front and rear drilling units are connected to each other through the first hydraulic unit 6, and the two drilling units are respectively provided with positioning mechanisms for positioning with the wellbore peripheral wall structure 5, any one of the two drilling units is in a relatively fixed positioning state with the wellbore peripheral wall structure 5, and the other drilling unit is in a non-positioned relaxed state, then the drilling unit in the non-positioned relaxed state can be made to move forward and backward axially through the piston extension movement in the first hydraulic unit 6 that plays a connecting role between the two drilling units. In this way, the front and rear drilling units are alternately positioned and relaxed, and combined with the piston movement of the first hydraulic unit 6 connected therebetween, the intermittent peristaltic propulsion of the drilling equipment can be realized. When the front and rear drilling units are both in a fixed positioning state with the wellbore peripheral wall, the piston extension movement in the second hydraulic unit 8 can provide the drill rod propulsion unit 10 with a driving force for forward drilling operations. Since the intermittent propulsion movement of the drilling rig unit and the drilling propulsion force of the drill rod propulsion unit 10 are both performed through the hydraulic unit, both its structural performance and working performance are more stable and reliable, and the propulsion force is also stronger and easier to control.

[0038] In the above structure, the specific arrangement of the front and rear drilling rig units and the first hydraulic unit 6 connected therebetween can be in different forms. For example, the supporting connection structure 2 of the rear drilling rig unit 17 is a structural member in the form of an axially extending inner cavity 19, and the first hydraulic unit 6 is fixedly connected to the axially extending inner cavity 19. The front end of the telescopic piston 7 of the first hydraulic unit is matched with the positioning guide structure 21 in the supporting connection structure 2 to perform telescopic movement, and its front end is connected to the rear end of the second hydraulic unit 8. Further, the axially extending inner cavity 19 of the supporting connection structure 2 can also have a through opening 20 at least at one end, and the telescopic piston 7 of the first hydraulic unit fixed therein is matched with the positioning guide structure 21 on the side of the through opening 20 to perform telescopic movement, and its front end is connected to the rear end of the second hydraulic unit 8. Since the telescopic movement of the second hydraulic unit 8 can penetrate into the axially extending inner cavity 19 of the supporting connection structure 2 through the through opening 20 of the axially extending inner cavity 19 of the supporting connection structure 2, the structure can be made more compact, which is conducive to further reducing the volume of the equipment.

[0039] On the basis of the above-mentioned structure, further improvements may include: the positioning mechanism provided outside the drilling rig front unit 18 and / or the drilling rig rear unit 17 for mutual positioning with the wellbore wall structure 5 may be provided by adopting at least two hydraulic devices (hydraulic device A3 at the drilling rig rear unit 17, hydraulic device B13 at the drilling rig front unit 18) symmetrically arranged along the circumference, and the hydraulic telescopic piston end thereof may be mutually supported and positioned with the wellbore wall structure 5.

[0040] In this improved structure, since the mutual positioning of the drilling device and the wellbore peripheral wall structure 5 relies on the positive pushing pressure exerted on the wellbore peripheral wall by the telescopic piston in the positioning hydraulic device in the radial plane, when setting the positioning hydraulic pushing device, in addition to adopting an oblique setting so that the piston can also generate a positive pushing component in the radial plane direction when moving obliquely, it is best to set the positioning hydraulic device along the radial plane direction so that the pushing piston can directly cooperate with the peripheral wall in a positive pushing manner through the telescopic movement in the radial plane direction, thereby obtaining the maximum radial positioning pushing force.

[0041] Furthermore, in order to improve the positioning reliability of the pushing piston of the above-mentioned positioning hydraulic device acting on the wellbore wall structure 5 and reduce and / or avoid the influence of the complex geological structure around the wellbore, the piston top contact end that can contact the wellbore wall structure 5 in the said positioning hydraulic device can also be further provided with a pushing fitting body that can expand the pushing range (a pushing fitting body A4 at the rear unit body 17 of the drilling rig, and a pushing fitting body B14 at the front unit body 18 of the drilling rig).

[0042] The above structure includes a hydraulic unit and / or a hydraulic device for providing intermittent creeping propulsion, drill rod propulsion and positioning jacking, which can be selected from various hydraulic equipment currently in common use without special requirements.

[0043] Embodiment 1:

[0044] The full-section intermittent peristaltic propulsion tunnel boring machine is further improved on the basis of the intermittent peristaltic propulsion drilling machine proposed in the Chinese patent document with the announcement number CN2821127Y, and at least one additional boosting mechanism is added to make the horizontal excavation operation safer, and the drill rod propulsion unit will not be easily damaged due to the operation of only one propulsion structure (boosting mechanism or main propulsion mechanism). Figure 1~Figure 3 As shown, it includes a top suspension structure, a boosting mechanism, a main pushing mechanism and a drill base plate 33, wherein the boosting mechanism is provided with at least two stages, and the two-stage boosting mechanisms are coaxially connected through a second hydraulic unit 8, wherein the first-stage boosting mechanism is also coaxially connected to the main pushing mechanism through the second hydraulic unit 8.

[0045] As a preferred design scheme, the full-section intermittent peristaltic propulsion tunnel boring machine can realize drilling operations by drilling vertically downward and tunnel excavation operations by drilling horizontally, and includes a top suspension structure 1, a booster mechanism, a main propulsion mechanism and a drill bit base plate 33, wherein the booster mechanism includes a supporting connection structure 2, a hydraulic device A3, a top support fitting body A4, a first hydraulic unit 6, a drilling rig rear unit body 17, an axially extending inner cavity 19, a positioning guide structure 21, etc., and the main propulsion mechanism includes a drilling rig front unit body 18, a drill rod propulsion unit 10, a supporting structure 12, a hydraulic device B13, a top support fitting body B14, etc. Its specific installation and connection method is the same as that of the above-mentioned intermittent peristaltic propulsion drilling rig, which will not be repeated here. The difference between this embodiment and the aforementioned one is that the basic mountain of the intermittent peristaltic propulsion drilling rig is further improved, and the booster mechanism is provided with at least two levels, and the two-stage booster mechanisms are coaxially connected through a second hydraulic unit 8, wherein the first-stage booster mechanism is also coaxially connected to the main propulsion mechanism through the second hydraulic unit 8.

[0046] Embodiment 2:

[0047] This embodiment is further optimized on the basis of the above embodiment, and the same points as the above technical solution are not repeated here. Figure 1~Figure 3 As shown, in order to better realize the full-section intermittent peristaltic propulsion tunnel boring machine described in the utility model, the following setting structure is particularly adopted: between the stages of the boosting mechanism, the positioning and guiding structure 21 at the through opening 20 of the rear-stage boosting mechanism is connected to the rear end of the second hydraulic unit 8, and the telescopic piston 9 of the second hydraulic unit is connected to the rear end of the drilling rig rear unit body 17 of the previous-stage boosting mechanism.

[0048] As a preferred design scheme, assuming that a two-stage boosting mechanism is provided, the boosting mechanism matched with the main pushing mechanism is defined as boosting mechanism A, and the other-stage boosting mechanism is defined as boosting mechanism B. In the specific setting, it can be as follows: the supporting connection structure 2 of the drilling rig rear unit body 17 of the boosting mechanism A is a structural member in the form of an axially extending inner cavity 19, and its first hydraulic unit 6 is fixedly connected to the axially extending inner cavity 19, and the front end of the telescopic piston 7 of the first hydraulic unit is matched with the positioning guide structure 21 in the supporting connection structure 2 to perform telescopic movement, and its front end is connected to the rear end of a second hydraulic unit 8. Furthermore, the axially extending inner cavity 19 of the supporting connection structure 2 can also have a through opening 20 at least at one end, and the telescopic piston 7 of the first hydraulic unit fixed therein is matched with the positioning guide structure 21 on the side of the through opening 20 to perform telescopic movement, and its front end is connected to the rear end of the second hydraulic unit 8. Since the telescopic movement of the second hydraulic unit 8 can penetrate into the axially extending inner cavity 19 of the supporting connection structure 2 through the through opening 20 of the axially extending inner cavity 19 of the supporting connection structure 2, the structure can be made more compact, which is conducive to further reducing the volume of the equipment.

[0049] The supporting connection structure 2 of the rear unit body 17 of the boosting mechanism B is a structural member in the form of an axially extending inner cavity 19, and its first hydraulic unit 6 is fixedly connected to the axially extending inner cavity 19, and the front end of the telescopic piston 7 of the first hydraulic unit is matched with the positioning guide structure 21 in the supporting connection structure 2 to perform telescopic movement, and its front end is connected to the rear end of a second hydraulic unit 8. Further, the axially extending inner cavity 19 of the supporting connection structure 2 can also have a through opening 20 at least at one end, and the telescopic piston 7 of the first hydraulic unit fixed therein can be matched with the positioning guide structure 21 on the side of the through opening 20 to perform telescopic movement, and its front end is connected to the rear end of the second hydraulic unit 8. The telescopic piston 9 of the second hydraulic unit is connected to the rear end of the rear unit body 17 of the boosting mechanism A (it can also be that the rear end that penetrates the rear unit body 17 of the drilling rig is connected to the rear end of the first hydraulic unit 6 of the boosting mechanism A).

[0050] During operation, since the boost mechanism and the front and rear two drilling units of the boost mechanism are connected to each other through the first hydraulic unit 6, and the three drilling units are respectively provided with positioning mechanisms for positioning with the wellbore wall structure 5, any two of the three drilling units are in a relatively fixed positioning state with the wellbore wall structure 5, and there is still one drilling unit in a non-positioning relaxed state, then the drilling unit in the non-positioning relaxed state can be made to move forward and backward axially through the piston telescopic movement of the first hydraulic unit 6 that serves as a connection between the three drilling units. In this way, the three drilling units are alternately positioned and relaxed, and combined with the piston movement of the first hydraulic unit 6 connected therebetween, the intermittent peristaltic propulsion of the drilling equipment can be realized. When the three drilling rig units are all in a fixed position with the peripheral wall of the wellbore, the piston in the second hydraulic unit 8 that cooperates with the front drilling rig unit 18 can be extended to provide the driving force for the drill rod propulsion unit 10 to perform forward drilling operations. Since the intermittent propulsion movement of the drilling rig units and the drilling propulsion force of the drill rod propulsion unit 10 are both performed by the hydraulic unit, both the structural performance and the working performance are more stable and reliable, and the propulsion force is also more powerful and easy to control.

[0051] Since there are at least three sets of hydraulic units (two sets of hydraulic devices A3 and one set of hydraulic devices B13), there are three sets of support legs (two sets of top support fittings A4 and one set of top support fittings B14), so the requirement that the tunnel boring machine can walk on the ground or in the tunnel can be met. At the same time, it has the function of retreating itself, so it is convenient to replace the drill bit and repair the tunnel boring machine.

[0052] Embodiment 3:

[0053] This embodiment is further optimized on the basis of any of the above embodiments, and the same points as the above technical solutions are not repeated here. Figure 1~Figure 3 As shown, in order to better realize the full-section intermittent peristaltic propulsion tunnel boring machine described in the utility model, the following setting structure is particularly adopted: it also includes a fixed slag bucket 28 installed on the drill bit base plate 33, a conveyor belt device 32 for outputting the sand in the fixed slag bucket 28, a sand suction pump 35 for sucking sand and a high-pressure airflow sand blowing device 36 for sending the sucked sand into the fixed slag bucket 28, and the conveyor belt device 32 and the high-pressure airflow sand blowing device 36 are both installed along the axial direction of the tunnel boring machine.

[0054] As a preferred design scheme, a fixed slag bucket 28 is installed on the drill bit base plate 33, and an output device 32, a sand pump 35 and a high-pressure airflow sand blowing device 36 are installed on the outside of the rear unit 17 and the front unit 18 of the drilling rig along the axis of the tunnel boring machine. When the tunnel boring machine is engaged in horizontal excavation, the sand pump 35 and the high-pressure airflow sand blowing device 36 cooperate to collect the excavated sand and soil into the fixed slag bucket 28, and then the sand and soil collected in the fixed slag bucket 28 are transported out through the output device 32, so as to achieve the purpose of discharging the slag and soil.

[0055] Embodiment 4:

[0056] This embodiment is further optimized on the basis of any of the above embodiments, and the same points as the above technical solutions are not repeated here. Figure 1~Figure 3 As shown, in order to better realize the full-section intermittent peristaltic propulsion tunnel boring machine described in the utility model, the following setting structure is particularly adopted: on the tunnel boring machine, along the central axis of the tunnel boring machine, the conveyor belt device 32 and the high-pressure airflow sand blowing device 36 are arranged at an angle greater than 30 degrees.

[0057] As a preferred design scheme, along the central axis of the tunnel boring machine, the conveyor belt device 32 and the high-pressure airflow sand blowing device 36 are arranged at an angle greater than 30 degrees; preferably, the conveyor belt device 32 is arranged on one side of the tunnel boring machine, and the high-pressure airflow sand blowing device 36 is arranged on the other opposite side.

[0058] Embodiment 5:

[0059] This embodiment is further optimized on the basis of any of the above embodiments, and the same points as the above technical solutions are not repeated here. Figure 1~Figure 3As shown, in order to better realize the full-section intermittent peristaltic propulsion tunnel boring machine described in the utility model, the following setting structure is particularly adopted: a laser guide device consisting of a light source, a light ring and a light target is also arranged on the tunnel boring machine in parallel with the central axis of the tunnel boring machine, and a light target and a light ring are arranged at the main propulsion mechanism, a light ring is arranged at each booster mechanism, and a light source is arranged at the rear end of the top suspension structure 1.

[0060] As a preferred arrangement, a laser guide device (light source 22, halo A23, halo B24, halo C25, light target 26) is also provided on the tunnel boring machine in parallel with the central axis of the tunnel boring machine, and light targets 26 and halo C25 are provided at the main thrust mechanism, a halo (halo B24 and halo A23) is provided at each boost mechanism, and a light source 22 is provided at the rear end of the top suspension structure 1. In the case of two-stage boost mechanisms, light targets 26 and halo C25 can be provided at the main thrust mechanism, a halo (halo B24 and halo A23) is provided at each boost mechanism, and a light source 22 is provided at the rear end of the top suspension structure 1. Such an arrangement can well guide the tunnel boring machine during lateral tunneling operations to avoid tunneling angle deviation.

[0061] Embodiment 6:

[0062] This embodiment is further optimized on the basis of any of the above embodiments, and the same points as the above technical solutions are not repeated here. Figure 1~Figure 3 As shown, in order to better realize the full-section intermittent peristaltic propulsion tunnel boring machine described in the utility model, the following setting structure is particularly adopted: it also includes a camera 31 arranged on the left and right sides of the middle part of the tunnel boring machine.

[0063] Embodiment 7:

[0064] This embodiment is further optimized on the basis of any of the above embodiments, and the same points as the above technical solutions are not repeated here. Figure 1~Figure 3 As shown, in order to better realize the full-section intermittent peristaltic propulsion tunnel boring machine described in the utility model, the following setting structure is particularly adopted: it also includes a control room 27, a hydraulic station 29 arranged on the side of the control room 27 and a gas detector 30 arranged in the hydraulic station 29. The control room 27, the hydraulic station 29 and the gas detector 30 are connected to the top suspension structure 1 as a whole.

[0065] Embodiment 8:

[0066] This embodiment is further optimized on the basis of any of the above embodiments, and the same points as the above technical solutions are not repeated here. Figure 1~Figure 3As shown, in order to better realize the full-section intermittent peristaltic propulsion tunneling machine described in the utility model, the following setting structure is particularly adopted: a drill bit water supply device 34 is also provided on the drilling rig front unit body 18 of the main pushing mechanism.

[0067] Embodiment 9:

[0068] Full-section intermittent creeping propulsion tunnel boring machine, this embodiment is further optimized on the basis of any of the above embodiments, such as Figure 1~Figure 3 As shown, it mainly consists of a top suspension structure 1, a supporting connection structure 2, a hydraulic device A3, a top support matching body A4, a wellbore peripheral wall structure 5, a first hydraulic unit 6, a first hydraulic unit telescopic piston 7, a second hydraulic unit 8, a second hydraulic unit telescopic piston 9, a drill rod propulsion unit 10, a drive motor 11, a supporting structure 12, a hydraulic device B13, a top support matching body B14, a drill rod 15, a drill bit 16, a drilling rig rear unit body 17, a drilling rig front unit body 18, an axially extending inner cavity 19, a through opening 20, a positioning guide structure 21, The light source 22, the light ring A 23, the light ring B 24, the light ring C 25, the light target 26, the control room 27, the fixed slag bucket 28, the hydraulic station 29, the gas detector 30, the camera 31, the conveyor belt device 32, the drill base plate 33, the drill water supply device 34, the sand pump 35, the high-pressure airflow sand blowing device 36, etc. are composed. The same as the above technical scheme is not repeated here. The working principle of the roadheader is briefly described as the continuous crushing of rocks by the cutter teeth with carbide cutters installed on the drill base plate 33 in front of the machine to achieve excavation. The power of the carbide cutter to crush the rock comes from two aspects, one is the positive pressure pushed to the cutter head by the propulsion cylinder (the first hydraulic unit 6, the second hydraulic unit 8), and the other is the torque driven by the main motor (drive motor 11) to drive the cutter head (drill base plate 33) to rotate. The reverse thrust and reverse torque generated on the cutter head (drill base plate 33) are overcome by the three sets of supporting cylinders (hydraulic device A3, hydraulic device B13) at the front, middle and rear of the machine.

[0069] The working system of the machine consists of a cutter head (drill base 33) and its driving system, a hydraulic system, a slag removal system (fixed slag removal bucket 28, conveyor belt device 32), a water supply system (pipeline, drill water supply device 34, etc.), an operation control system (control room 27, hydraulic station 29, etc.), a laser pointing system (light source 22, halo A 23, halo B 24, halo C 25, light target 26), a communication system, etc. The gas detector 30 mainly detects the gas concentration in the tunnel and serves as an alarm.

[0070] 1. Cutter head and its drive system:

[0071] The cutter head (drill base plate 33) is a round steel plate with ribs. A plurality of hobs (teeth) with carbide tools are distributed on the front. When the hobs are worn, they can be easily replaced. The flange plate behind the cutter head is connected to the main shaft of the machine to transmit propulsion force and torque. At the same time, water channels and water spray holes are also arranged.

[0072] The rotation drive of the cutter disc is driven by an explosion-proof motor (drive motor 11), which is connected to the main shaft equipped with a thrust bearing through a reducer. The main shaft is connected to the cutter disc through a flange, driving the cutter disc to rotate and provide the torque required for rock crushing. If the number of revolutions of the cutter disc needs to be adjusted, it can be achieved through the frequency converter configured in this machine.

[0073] 2. Hydraulic support and propulsion system:

[0074] The power source of the hydraulic system - the hydraulic station 29 and the oil tank are arranged in the control room 27 (or adjacent thereto), and the rated pressure of the system is designed according to actual needs.

[0075] The working mechanism of the hydraulic system includes: front support cylinder (hydraulic device B13 of the main push mechanism), front propulsion cylinder (second hydraulic unit 8 of the main push mechanism), middle support cylinder (hydraulic device A3 of the middle boost mechanism), middle propulsion cylinder (second hydraulic unit 8 of the middle boost mechanism), rear support cylinder (hydraulic device A3 of the rear boost mechanism), rear propulsion cylinder (first hydraulic unit 6 of the rear boost mechanism). The pressure of the working mechanism and the extension and retraction and speed of the cylinder piston rod are adjusted by the operating handle or knob or button on the operating panel in the control room 27.

[0076] The function of the front, middle and rear thrust cylinders is to provide the positive pressure required by the cutterhead to break the rock and push the cutterhead forward continuously. Due to the differences in the minerals and cementing components that make up the rock, the properties of the rock (such as hardness, etc.) also vary greatly. Generally speaking, the pressure required to break the rock increases with the increase in rock hardness. The different pressures required to excavate different rocks are adjusted through the control room operating surface.

[0077] The system can also be equipped with a pressure sensor and a propulsion cylinder stroke sensor, which can be transmitted to the display screen. The operator can read the pressure on the display screen and adjust it. The propulsion stroke of the cylinder can be read and the speed of the cylinder propulsion can be judged.

[0078] All support cylinders and all thrust cylinders are designed in the same hydraulic circuit, and the maximum support force generated by the support cylinders is three times the maximum thrust force. The friction between the hydraulic support acting on the top support fitting (top support fitting A4, top support fitting B14) and the weight of the machine and the wall of the excavation hole is sufficient to balance the reverse thrust generated by the thrust cutterhead and the reverse torque generated by the rotation of the cutterhead.

[0079] In order to effectively control the attitude of the tunnel boring machine, a cylinder stroke sensor can be installed in each group of support mechanisms. When the support strokes of the front and rear support groups are the same, it means that the whole machine is on the same axis. At this time, if the tunnel boring operation is carried out, it will move forward along the axis of the machine. Similarly, when the tunnel boring needs to be tilted up, down, or turn left or right, the purpose of changing direction can be achieved by calculating and adjusting the X support by unequal amounts.

[0080] When the depth of the excavation tunnel reaches the requirement, the cutters on the outside of the cutterhead are properly processed according to the design, and the entire machine can be withdrawn quickly along the original excavation route using the hydraulic support system.

[0081] 3. Slag discharge system:

[0082] If the rock debris from the cutterhead is not removed in time, it will accumulate in the tunnel, causing secondary crushing of the rock debris, aggravating the wear of the cutterhead tools, increasing energy consumption, and even causing the inability to continue tunneling. Therefore, timely removal of rock debris is an important part of maintaining efficient tunneling of the tunnel boring machine.

[0083] For this purpose, the machine is designed with a belt conveyor (conveyor belt device 32) as a slag removal device. The rock slag crushed by the roller falls to the rear and lower part of the cutter disc. Four scoops are installed along the outer diameter of the rear part of the cutter disc. The scoops rotate synchronously with the cutter disc and shovel the rock slag into the scoops. When the scoops rotate to the top and are nearly vertical, due to the effect of gravity, the rock slag in the scoops is poured into the funnel (fixed slag removal hopper 28) fixed on the machine. Below the funnel is the extended end of the belt conveyor. The rock slag is transported to the rear of the control room 27 by the belt conveyor installed on the machine, and then transported to the outside of the tunnel by appropriate methods.

[0084] 4. Water supply system:

[0085] The functions of the water supply system are as follows: 1. Eliminate the dust generated by rock crushing at the rock crushing working face; 2. Cool the rock crushing tools to avoid increased wear of the tools due to overheating of the tools and overheating of the roller cutter bearings; 3. Cool the main motor (drive motor 11). The machine uses a submersible motor and must work under flowing water.

[0086] The machine is designed with a water channel (conventional designs in the field can also meet the requirements). The water is supplied by a sewage submersible electric pump for engineering. The pumped water flows through the inner cylinder of the machine to the back of the cutter disc, and then through the pipeline to the water spray holes distributed on the cutter disc, and directly sprays onto the working surface of the cutter disc. When the water flows through the inner cylinder, it flows through the motor and reducer housing to play a cooling role. The cooling and dust removal effects are achieved.

[0087] 5. Control Room:

[0088] The control room 27 is a rectangular steel shell, which contains a hydraulic power station, electrical circuits, electric control circuits, operating buttons, hydraulic circuits, operating handles, buttons, etc. In order to facilitate the operator's operation, all operating buttons and operating handles are concentrated on an operating panel, and the functions of each button and handle are clearly indicated next to the corresponding position. At the same time, a PLC display screen is also set on the panel. The pressure in the hydraulic circuit, the amount of each cylinder stroke, and the operating current of each motor are transmitted through the cable line and displayed on the PLC screen. If adjustment is required, it can also be displayed accordingly to carry out human-computer dialogue. At the same time, a printer is also set. When a work stroke is completed, the time and working parameters of the work stroke can be printed out.

[0089] For the safe operation of the machine, the electrical circuit has a self-locking function. In other words, if the water pump does not deliver water, the hydraulic cylinder does not support pressure, the gas exceeds the standard, or the ventilation volume does not meet the standard, any of the following four situations will occur, and the main motor cannot be started.

[0090] 6. Communication system (can be set in actual application to facilitate communication):

[0091] Telephone system: This machine is not configured yet. In order to timely understand the working status of the tunnel or facilitate emergency handling, it is recommended that users configure an intercom to facilitate communication inside and outside the tunnel.

[0092] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modification or equivalent change made to the above embodiment based on the technical essence of the present invention is within the protection scope of the present invention.

Claims

1. A full-section intermittent creeping driving tunnel boring machine, comprising a top suspension structure, a booster mechanism, a main push mechanism and a drill base plate (33), characterized in that: The boosting mechanism is provided with at least two stages, the two stages of the boosting mechanisms are coaxially connected via a second hydraulic unit (8), wherein the first stage of the boosting mechanism is also coaxially connected to the main thrust mechanism via the second hydraulic unit (8).

2. The full-face intermittent creeping driving tunnel boring machine according to claim 1, characterized in that: Between the boosting mechanism stages, a positioning guide structure (21) at a through opening (20) of a subsequent boosting mechanism is connected to a rear end of a second hydraulic unit (8), and a telescopic piston (9) of the second hydraulic unit is connected to a rear end of a drilling rig rear unit body (17) of a previous boosting mechanism.

3. The full-face intermittent creeping driving tunnel boring machine according to claim 1, characterized in that: The invention also comprises a fixed slag removal bucket (28) installed on the drill bit base plate, a conveyor belt device (32) for outputting sand in the fixed slag removal bucket (28), a sand extraction pump (35) for extracting sand, and a high-pressure air flow sand blowing device (36) for delivering the sucked sand into the fixed slag removal bucket (28), wherein the conveyor belt device (32) and the high-pressure air flow sand blowing device (36) are both installed along the axial direction of the tunnel boring machine.

4. The full-face intermittent creeping driving tunnel boring machine according to claim 3, characterized in that: On the tunnel boring machine, along the central axis of the tunnel boring machine, the conveyor belt device (32) and the high-pressure airflow sand blowing device (36) are arranged at an angle greater than 30 degrees.

5. The full-face intermittent creeping driving tunnel boring machine according to claim 1, 2, 3 or 4, characterized in that: A laser guide device consisting of a light source, a light ring and a light target is also arranged on the tunnel boring machine in parallel with the central axis of the tunnel boring machine, and the light target and the light ring are arranged at the main thrust mechanism, a light ring is arranged at each booster mechanism, and a light source is arranged at the rear end of the top suspension structure (1).

6. The full-face intermittent creeping driving tunnel boring machine according to claim 1, 2, 3 or 4, characterized in that: It also includes a camera (31) arranged on the left and right sides of the middle of the tunnel boring machine.

7. The full-face intermittent creeping driving tunnel boring machine according to claim 1, 2, 3 or 4, characterized in that: It also includes a control room (27), a hydraulic station (29) arranged on the side of the control room (27), and a gas detector (30) arranged in the hydraulic station (29); the control room (27), the hydraulic station (29), and the gas detector (30) are integrally connected to the top suspension structure (1).

8. The full-face intermittent creeping driving tunnel boring machine according to claim 1, 2, 3 or 4, characterized in that: A drill bit water supply device (34) is also provided on the drill rig front unit body (18) of the main pushing mechanism.

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